Hitachi Puzzle Remake
Work Project // Mid 2026
Hitachi Puzzle is a multiplayer VR activity where players work together to assemble a Hitachi Dump Truck. This is a remake of a previously created project now with the Meta SDK and multiplayer support.
I was given this project around April 2026 with two core goals in mind: Upgrade the SDK that the original project was using (which was MRTK at the time) to the Meta SDK and integrate multiplayer support so that multiple clients could play the experience at the same time.
Replacing the SDK to Meta SDK was simple as I was already familiar with the SDK with previous experience at work, but this was my first proper attempt at creating a multiplayer experience within VR and Unity. It was a great learning experience for me as it allowed me to deep dive into the architecture of building stable multiplayer experiences.
Photon Fusion 2 was used to handle the multiplayer infrastructure, using the local player as the host. For the interactable objects in the space I used networked grabbable gameobjects to sync the objects world position with all players in the experience. For the exploded view animations and enabling/disabling the holographic hints I used RPCs to send those specific events to each player in the experience.
Overall I was quite happy with how the project turned out. If there was anything I could improve, I would love to add to expand some smaller details such as adding some sort of celebratory event for when the players complete the experience or a lobby system so players can invite and begin play at the same time. I believe small details such as those would make the experience more complete.
Deacon Jones 